Linux Kernel Vulnerability in Memory Management Related to mTHP Swapin
CVE-2025-38241
Currently unrated
What is CVE-2025-38241?
A vulnerability in the Linux kernel's memory management system has been identified, which may result in soft lockups during mTHP (multi-page transparent huge page) swap-in operations. This issue arises when a conflict occurs between allocated swap cache memory and the mTHP folio, leading to repeated retries of the allocation process, which can cause system performance issues. The problem was noted when using zram devices and can be reproduced under specific conditions involving memory cgroups and persistent allocation loops.
Affected Version(s)
Linux 1dd44c0af4fa1e80a4e82faa10cbf5d22da40362 < 1283dfc1e0cd52cf525c2cb1b59a6f9183aab7ca
Linux 1dd44c0af4fa1e80a4e82faa10cbf5d22da40362
Linux 6.14